U. S. ZIP Code Database Get all US ZIP Codes and their information in one easy to use database. ZIP4 ZIP Code Database Covering every address in the U. S. , get the 4 information you need. U. S. 2010 Census MultiLevel Database The U. S. 2010 Census MultiLevel Database provides demographic totals and averages at the City, County, State, CBSA, and Congressional District level for 2010.